The ytsejam is used to refer to a few things, but they are always in relation to the band Dream Theater. Ytsejam itself is a song on the album When Day and Dream Unite by Dream Theater. The word is Majesty spelled backwards, and Majesty was the name of the band way back when. Ytsejam also refers to the Dream Theater mailing list, and its members form quite an interesting
and volatile community all to themselves.